This two-disc compilation of 18 cartoons produced in 1966 by Filmation Associates features DC Comics' superheroes the Atom, the Flash, Green Lantern, and Hawkman battling alien invaders and fantastical creatures from strange worlds—all intent on conquering planet Earth. The collection includes three cartoons of each hero plus three separate adventures of both the Justice League of America (the Atom, the Flash, Green Lantern, Hawkman, and Superman) and the Teen Titans (Speedy, Kid Flash, Wonder Girl, and Aqualad).